It's an unlimited plan. Unlimited internet, instant messaging, mms and sms. I just pay for calls, if I make them. Well, telstra doesn't do that plan anymore, but I was wondering, because I wanna get an iPhone 4, if telstra would allow me to stay on the cap plan I'm on at the moment? It's convenient and I've had no problems with this plan. I just don't wanna have to go with optus or any other, as I've been with telstra for years.